Mozilla is messing around with their add-ons, LastPass included.
I have used LastPass for several years on two pc's as well as being a premium user.
Works great with Mozilla so far as an add-on, for now, on my computers but now sucks with Mozilla on my cellphone. Add-on is installed on my Cell as Mozilla add-on but disappears from the drop down menu unless I uninstall it and reinstall it, but now even so, the LastPass icon is in the username and password fields but the LastPass icon is blacked out and will fill nothing in.

I tried to click on the icon and it does nothing or directs me to another Mozilla/ LastPass site and when I fill in my username and password and click enter it just spins and spins forever but will not connect to anything.

One computer I have FF version 56.0.2 and all of my add-ons have the word "Legacy" by them meaning they are not updated to the upcoming version of FF version 57 so alot of add-ons will no longer work and alot of people are going to be very pissed off at Mozilla. Once again its another company fixing what is not broke. They cannot leave things alone when people are happy.

On my other computer I changed over to FireFox ESR version 52.4.0 (32 bit) which is supposed to give you more time until some time next year and the word "Legacy" disappeared by the add-ons, for now, until Mozilla messes with it again.

Back to my main complaint though right now is the LastPass for FF on mobile. I am an avid user everyday and now I have lost all my password fill ins for all of my utilities, emails and banking sites on Mozilla for mobile. I have always had the LastPass App on my phone as well as the add-on for FF mobile with no complaints until now. I am reading all the reviews below mine and alot of people are premium users also and are unhappy but for some reason, LastPass has still not been updated for Mozilla 57.

I have tried to contact LastPass support and file a support ticket several times and what I always hear is "Use Another Browser" like Internet Explorer (which sucks) or Google Chrome. I have used Mozilla FF for ten years and I don't want another browser, but I might have to. All of my bookmarks and settings are in FF so I don't want to go to another Browser so stop telling and and many users that! Just simply update it. I want my LastPass for FF mobile back so please update! As for you Mozilla, quit fucking with your add-ons and give your customers what they want.

As I mentioned earlier, I have had the LastPass app on my phone for a long time but did not use it, until now. I discovered it works great as an ISP and fills everything in really well compared to the Firefox add-on and is also very fast, compared to Mozilla, which takes forever to connect on my cell. The awesome part is that LastPass will let you move the app to the SD Card to save space. Alot of Apps won't let you now, including Mozilla, unless you root, which I have done before, and it does not always work. Mozilla is a very big app on my cell and takes up alot of space and always had it on my SD card, but now they screwed with that too so you have to put it on internal memory only. Try the LastPass App! It works extremely well But please LastPass, update your add-on, please.